one day after the head of scotland yard resigned hi top deputy followed him out of the door. news korp owner and his son are scheduled to testify before the parliament tomorrow. >> and it's happened again. a large dust storm sweeping through phoenix now for the second time in just the last few weeks. the cloud blanketed the region push bid up to 50 miles per hour winds. it's fascinating to take a look at. strange, too. some experts are warning of potential health risks. doctors say it can trigger valley fever. and you can see and understand why. >> and no relief in sight for millions of dollars baking in heat across the country. heat advisories are now posted in 17 states from texas to ohio and minnesota. several fans of the baseball game had to be treated for heat exhaustion. in all, temperatures topped 100 degrees in five states today with humidity making it feel hotter. >> it's muggy. and this 72-year-old is going into that water, honey. >> the combination is dangerous. and heat is the number one weather-related killer in the u.s.. officials are urging people to stay hydra